Function Block - ABB Relion Technical Manual

Section 10
Frequency protection
10.3.3
10.3.4
10.3.5
Table 196: SAPFRC (81) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
PUFreqGrad -10.00 - 10.00
tTrip 0.000 - 60.000
RestoreFreq 45.00 - 65.00
tRestore 0.000 - 60.000
328

Function block

SAPFRC (81)
V3P* TRIP
BLOCK PICKUP
RESTORE
BLKDMAGN
ANSI09000281-1-en.vsd
ANSI09000281 V1 EN
Figure 154: SAPFRC (81) function block
Signals
Table 194: SAPFRC (81) Input signals
Name Type
V3P GROUP
SIGNAL
BLOCK BOOLEAN
Table 195: SAPFRC (81) Output signals
Name Type
TRIP BOOLEAN
PICKUP BOOLEAN
RESTORE BOOLEAN
BLKDMAGN BOOLEAN
Settings
Unit Step
- -
Hz/s 0.01
s 0.001
Hz 0.01
s 0.001
Default Description
- Three phase group signal for voltage inputs
0 Block of function
Description
Operate/trip signal for frequency gradient
Start/pick-up signal for frequency gradient
Restore signal for load restoring purposes
Blocking indication due to low magnitude
Default Description
Disabled Disable/Enable Operation
0.50 Frequency gradient pick up value, the sign
defines direction
0.200 Operate time delay in positive / negative
frequency gradient mode
49.90 Restore is enabled if frequency is above set
frequency value
0.000 Restore time delay
1MRK 502 048-UUS A
Technical manual